Shinano-no-Sanada

The Shinano-no-Sanada was a feudal Japanese samurai clan from Shinano Province. They split with the Kozuke-no-Sanada, who were loyal to the Tokugawa, because they were loyal to the Toyotomi clan, and were aligned with the Western Army in the Sekigahara Campaign.

History
After the Battle of Ueda Castle in 1585, Ieyasu Tokugawa married the daughter of his retainer Tadakatsu Honda to Sanada daimyo Masayuki Sanada's son and heir Nobuyuki Sanada because he recognized his bravery, and in doing so established a connection between the Sanada and Tokugawa/Honda clans. When Ieyasu founded the Eastern Army to seize power from the eight year-old Shogun Hideyori Toyotomi (son of the second unifier of Japan, Hideyoshi Hashiba), Masayuki decided to support the Toyotomi Shogunate, while Nobuyuki remained loyal to his wife's family and sided with the Eastern Army. While Masayuki ruled the Shinano Province lands of the family, Nobuyuki ruled Kozuke Province from Numata Castle.

During the 1600 Sekigahara Campaign, the Shinano Sanada invaded Kozuke and attacked Numata Castle, and nearly took it, had it not been for the defeat of the Western Army at the Battle of Sekigahara at the same time. The Shinano Sanada clan was stripped of its titles and lands and Nobuyuki was recognized as the new daimyo of the Sanada.